# -*- coding: utf-8 -*-
import sys
import math
import os
import itertools
import string
import heapq
import _collections
from collections import Counter
from collections import defaultdict
from collections import deque
from functools import lru_cache
import bisect
import re
import queue
import copy
import decimal


class Scanner():
    @staticmethod
    def int():
        return int(sys.stdin.readline().rstrip())

    @staticmethod
    def string():
        return sys.stdin.readline().rstrip()

    @staticmethod
    def map_int():
        return [int(x) for x in Scanner.string().split()]

    @staticmethod
    def string_list(n):
        return [Scanner.string() for i in range(n)]

    @staticmethod
    def int_list_list(n):
        return [Scanner.map_int() for i in range(n)]

    @staticmethod
    def int_cols_list(n):
        return [Scanner.int() for i in range(n)]


def solve():
    X = Scanner.int()
    X -= 400
    print(8 - X // 200)


def main():
    # sys.setrecursionlimit(1000000)
    # sys.stdin = open("sample.txt")
    solve()


if __name__ == "__main__":
    main() import sys sys import math math import os os import itertools itertools import string string import heapq heapq import _collections _collections from collections import Counter from collections import defaultdict from collections import deque from functools import lru_cache import bisect bisect import re re import queue queue import copy copy import decimal decimal class Scanner():
    @staticmethod
    def int():
        return int(sys.stdin.readline().rstrip())

    @staticmethod
    def string():
        return sys.stdin.readline().rstrip()

    @staticmethod
    def map_int():
        return [int(x) for x in Scanner.string().split()]

    @staticmethod
    def string_list(n):
        return [Scanner.string() for i in range(n)]

    @staticmethod
    def int_list_list(n):
        return [Scanner.map_int() for i in range(n)]

    @staticmethod
    def int_cols_list(n):
        return [Scanner.int() for i in range(n)] Scanner def int():
        return int(sys.stdin.readline().rstrip())

     int return int(sys.stdin.readline().rstrip()) int(sys.stdin.readline().rstrip()) int sys.stdin.readline().rstrip() sys.stdin.readline().rstrip sys.stdin.readline() sys.stdin.readline sys.stdin sys stdin readline rstrip @staticmethod
     int staticmethod int def string():
        return sys.stdin.readline().rstrip()

     string return sys.stdin.readline().rstrip() sys.stdin.readline().rstrip() sys.stdin.readline().rstrip sys.stdin.readline() sys.stdin.readline sys.stdin sys stdin readline rstrip @staticmethod
     string staticmethod string def map_int():
        return [int(x) for x in Scanner.string().split()]

     map_int int(x) for x in Scanner.string().split() for x in Scanner.string().split() x Scanner.string().split() Scanner.string().split Scanner.string() Scanner.string Scanner string split for x in Scanner.string().split() int(x) int x return [int(x) for x in Scanner.string().split()] [int(x) for x in Scanner.string().split()] @staticmethod
     map_int staticmethod map_int def string_list(n):
        return [Scanner.string() for i in range(n)]

     string_list Scanner.string() for i in range(n) for i in range(n) i range(n) range n for i in range(n) Scanner.string() Scanner.string Scanner string return [Scanner.string() for i in range(n)] [Scanner.string() for i in range(n)] n n @staticmethod
     string_list staticmethod string_list def int_list_list(n):
        return [Scanner.map_int() for i in range(n)]

     int_list_list Scanner.map_int() for i in range(n) for i in range(n) i range(n) range n for i in range(n) Scanner.map_int() Scanner.map_int Scanner map_int return [Scanner.map_int() for i in range(n)] [Scanner.map_int() for i in range(n)] n n @staticmethod
     int_list_list staticmethod int_list_list def int_cols_list(n):
        return [Scanner.int() for i in range(n)] int_cols_list Scanner.int() for i in range(n) for i in range(n) i range(n) range n for i in range(n) Scanner.int() Scanner.int Scanner int return [Scanner.int() for i in range(n)] [Scanner.int() for i in range(n)] n n @staticmethod
     int_cols_list staticmethod int_cols_list def solve():
    X = Scanner.int()
    X -= 400
    print(8 - X // 200) solve X = Scanner.int() X Scanner.int() Scanner.int Scanner int X -= 400 X 400 print(8 - X // 200) print 8 - X // 200 8 X // 200 X 200 def main():
    # sys.setrecursionlimit(1000000)
    # sys.stdin = open("sample.txt")
    solve() main solve() solve if __name__ == "__main__":
    main() __name__ == "__main__" __name__ "__main__" main() main def solve():
    X = Scanner.int()
    X -= 400
    print(8 - X // 200) def solve():
    X = Scanner.int()
    X -= 400
    print(8 - X // 200) solve class Scanner():
    @staticmethod
    def int():
        return int(sys.stdin.readline().rstrip())

    @staticmethod
    def string():
        return sys.stdin.readline().rstrip()

    @staticmethod
    def map_int():
        return [int(x) for x in Scanner.string().split()]

    @staticmethod
    def string_list(n):
        return [Scanner.string() for i in range(n)]

    @staticmethod
    def int_list_list(n):
        return [Scanner.map_int() for i in range(n)]

    @staticmethod
    def int_cols_list(n):
        return [Scanner.int() for i in range(n)] class Scanner():
    @staticmethod
    def int():
        return int(sys.stdin.readline().rstrip())

    @staticmethod
    def string():
        return sys.stdin.readline().rstrip()

    @staticmethod
    def map_int():
        return [int(x) for x in Scanner.string().split()]

    @staticmethod
    def string_list(n):
        return [Scanner.string() for i in range(n)]

    @staticmethod
    def int_list_list(n):
        return [Scanner.map_int() for i in range(n)]

    @staticmethod
    def int_cols_list(n):
        return [Scanner.int() for i in range(n)] Scanner def main():
    # sys.setrecursionlimit(1000000)
    # sys.stdin = open("sample.txt")
    solve() def main():
    # sys.setrecursionlimit(1000000)
    # sys.stdin = open("sample.txt")
    solve() main
# -*- coding: utf-8 -*-
import sys
import math
import os
import itertools
import string
import heapq
import _collections
from collections import Counter
from collections import defaultdict
from collections import deque
from functools import lru_cache
import bisect
import re
import queue
import copy
import decimal


class Scanner():
    @staticmethod
    def int():
        return int(sys.stdin.readline().rstrip())

    @staticmethod
    def string():
        return sys.stdin.readline().rstrip()

    @staticmethod
    def map_int():
        return [int(x) for x in Scanner.string().split()]

    @staticmethod
    def string_list(n):
        return [Scanner.string() for i in range(n)]

    @staticmethod
    def int_list_list(n):
        return [Scanner.map_int() for i in range(n)]

    @staticmethod
    def int_cols_list(n):
        return [Scanner.int() for i in range(n)]


def solve():
    X = Scanner.int()
    X -= 400
    print(8 - X // 200)


def main():
    # sys.setrecursionlimit(1000000)
    # sys.stdin = open("sample.txt")
    solve()


if __name__ == "__main__":
    main()
